**Core Concept**
Chromophobe renal cell carcinoma (RCC) is a subtype of kidney cancer characterized by its distinct histological features and genetic alterations. Chromophobe RCC accounts for approximately 5% of all RCC cases and is known for its slow growth and relatively better prognosis compared to other RCC variants.

**Why the Correct Answer is Right**
Chromophobe RCC is often associated with chromosomal deletions, particularly of the short arm of chromosome 1 (1p) and the long arm of the Y chromosome. These deletions lead to the loss of tumor suppressor genes, contributing to the development and progression of chromophobe RCC. The correct answer, **monosomy of 1 and Y (-1, -Y)**, highlights the specific genetic alterations characteristic of this subtype.

**Why Each Wrong Option is Incorrect**
**Option A:** VHL gene mutations are more commonly associated with clear cell RCC, the most common subtype of RCC, which accounts for approximately 70% of all RCC cases.
**Option B:** Trisomy of 7 and 17 (+7, +17) is a chromosomal abnormality characteristic of papillary RCC, another subtype of RCC.
**Option C:** 3 p deletions (3p-) are associated with clear cell RCC, particularly in the context of von Hippel-Lindau (VHL) disease.

**Clinical Pearl / High-Yield Fact**
Chromophobe RCC often presents with a distinct clinical feature: it tends to be more common in patients with end-stage renal disease, particularly those undergoing hemodialysis. This association highlights the importance of considering the underlying renal pathology when evaluating patients with RCC.

**✓ Correct Answer: D. Monosomy of 1 and Y (-1, -Y)**